<template>
  <div>
    <table border="1" width="700" style="border-collapse: collapse">
      <caption>
        购物车
      </caption>
      <thead>
        <tr>
          <th><input type="checkbox" v-model="isAll" /> <span>全选</span></th>
          <th>名称</th>
          <th>价格</th>
          <th>数量</th>
          <th>总价</th>
          <th>操作</th>
        </tr>
      </thead>
      <tbody>
        <good-info
          v-for="(good, index) in goodList"
          :key="index"
          :name="good.name"
          :price="good.price"
          :num="good.num"
          :ind="index"
          :checked="good.checked"
          @minus="minus"
          @add="add"
          @del="del"
          @chec="chec"
        />
      </tbody>
      <tfoot>
        <tr>
          <td>合计:</td>
          <td colspan="5">
            <sum-all :goodList="goodList" />
          </td>
        </tr>
      </tfoot>
    </table>
  </div>
</template>

<script>
  import GoodInfo from './components/GoodInfo.vue'
  import SumAll from './components/SumAll.vue'
  export default {
    components: {
      [GoodInfo.name]: GoodInfo,
      SumAll,
    },
    data() {
      return {
        goodList: [
          {
            name: '诸葛亮',
            price: 1000,
            num: 1,
            checked: false,
          },
          {
            name: '蔡文姬',
            price: 1500,
            num: 1,
            checked: false,
          },
          {
            name: '妲己',
            price: 2000,
            num: 1,
            checked: false,
          },
          {
            name: '鲁班',
            price: 2200,
            num: 1,
            checked: false,
          },
        ],
      }
    },
    methods: {
      minus(i) {
        this.goodList[i].num === 0 ? 0 : this.goodList[i].num--
      },
      add(e) {
        this.goodList[e].num++
      },
      del(i) {
        this.goodList = this.goodList.filter((obj, index) => index != i)
      },
      chec(c, i) {
        console.log(c)
        this.goodList[i].checked = c
      },
    },
    computed: {
      isAll: {
        get() {
          return this.goodList.every((i) => i.checked === true)
        },
        set(val) {
          this.goodList.forEach((i) => (i.checked = val))
        },
      },
    },
  }
</script>

<style></style>
